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The Cryosphere An interactive open-access journal of the European Geosciences Union
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TC | Articles | Volume 13, issue 7
The Cryosphere, 13, 1877–1887, 2019
https://doi.org/10.5194/tc-13-1877-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
The Cryosphere, 13, 1877–1887, 2019
https://doi.org/10.5194/tc-13-1877-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 11 Jul 2019

Research article | 11 Jul 2019

Buoyant forces promote tidewater glacier iceberg calving through large basal stress concentrations

Matt Trevers et al.

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Short summary
Iceberg calving is a major factor in the retreat of outlet glaciers of the Greenland Ice Sheet. Massive block overturning calving events occur at major outlet glaciers. A major calving event in 2009 was triggered by the release of a smaller block of ice from above the waterline. Using a numerical model, we investigate the feasibility of this mechanism to drive large calving events. We find that relatively small perturbations induce forces large enough to open cracks in ice at the glacier bed.
Iceberg calving is a major factor in the retreat of outlet glaciers of the Greenland Ice Sheet....
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